compression ratio INFINITI QX50 2020 Owner's Manual

2 Instruments and controls
Instrument panel.................................2-2
Meters and gauges ...............................2-4
Speedometer and odometer ...................2-4
Tachometer ...................................2-6
Engine coolant temperature gauge .............2-6
Fuel gauge ....................................2-7
Distance To Empty (DTE) ......................2-7
Variable Compression Turbo ...................2-8
Warning lights, indicator lights and audible
reminders ........................................2-9
Checking lights .............................. 2-10
Warning lights .............................. 2-10
Indicator lights .............................. 2-16
Audible reminders ........................... 2-19
Vehicle information display .....................2-19
How to use the vehicle information
display ...................................... 2-20
Startup display .............................. 2-20
Resetting the trip computer ...................2-21
Oil control system ............................ 2-21
Vehicle information display warnings and
indicators ................................... 2-24
Security systems ............................... 2-33
Vehicle security system ......................2-33INFINITI Vehicle Immobilizer System
.........2-34
Wiper and washer switch .......................2-36
Switch operation ............................ 2-36
Rain-sensing auto wiper system
(if so equipped) .............................. 2-37
Rear switch operation ....................... 2-38
Rear window defroster, outside mirror
defroster (if so equipped), and wiper deicer
(if so equipped) switch .......................... 2-39
Headlight switch ............................... 2-40
Headlight control switch .....................2-40
LED Daytime Running Lights (DRL)
system ...................................... 2-44
Instrument brightness control ................2-45
Turn signal switch ........................... 2-45
Fog light switch (if so equipped) .............2-46
Horn ........................................... 2-46
Climate controlled seat switches
(if so equipped) ................................. 2-47
Heated seats

(if so equipped) ................... 2-48
Dynamic driver assistance switch (for vehicles
without ProPILOT Assist) (if so equipped) .......2-49
Steering Assist switch (for vehicles with
ProPILOT Assist) (if so equipped) ...............2-50

VARIABLE COMPRESSION
TURBO
Your engine is equipped with a variable com-
pression ratio system called “Variable Com-
pression Turbo”. This system can vary the
engine compression ratio continuously.
According to driving conditions, the system
applies optimum compression ratio auto-
matically to achieve both high output and
high fuel economy efficiency.This is not a physical gauge. It is a display
option in the vehicle information display that
can be selected. For additional information,
refer to “Vehicle information display” in this
section.
1Compression ratio status display
Displays the status of compression ratio
controlled by Variable Compression
Turbo. The lowest compression ratio
(8:1) and the highest (14:1) are displayed
as “Power” and ”Eco” respectively.
2Turbo charger boost pressure gauge
Displays the turbo charger boost pres-
sure.
NOTE:
Under some conditions, the compression ra-
tio may not change. This is not a malfunction
of the system.
CAUTION
If the Variable Compression Turbo becomes
faulty, the Malfunction Indicator Light
(MIL) may come on. For additional infor-
mation, refer to “Malfunction Indicator
Light (MIL)” in this section.
LIC3924
2-8Instruments and controls

ENGINE
ModelKR20DDET
Type Gasoline, 4-cycle, DOHC
Cylinder arrangement 4-cylinder, inline
Bore x Stroke when compression ratio = 8 in (mm) 3.307 x 3.547 (84.0 x 90.1)
when compression ratio = 14 in (mm) 3.307 x 3.500 (84.0 x 88.9)
Displacement when compression ratio = 8 cu in (cm
3) 121.86 (1,997)
when compression ratio = 14 cu in (cm3) 120.22 (1,970)
Firing order 1–3–4–2
Idle speed No adjustment is necessary.
CVT in N (Neutral) position
Ignition timing (degree B.T.D.C. at idle speed)
CO%atidle
Spark plug DILKAR7N9HG
Spark plug gap (Nominal) in (mm) 0.035 (0.9)
Camshaft operation Timing chain
This spark ignition system complies with the Canadian standard ICES-002.
SPECIFICATIONS
10-8Technical and consumer information